Machine with self-centering rotating basket for washing dishes and utensils



March 4, 1969 3v BROLLO 3,430,638

' MACHINE WITH SELF-CENTERING ROTATING BASKET FOR WASHING DISHES ANDUTENSILS Filed April 11, 1967 s t INVENTOR G. B ["02 Z0 ATTORNEYS March4, 1969 G BROLLQ 3,430,638

MACHINE WITH SELF-CENTERING ROTATING BASKET FOR WASHING DISHES ANDUTENSILS Filed April 11, 1967 Sheet 3 014 L-J o 5 w CZTJFIi'LiZZZfi:121-33) INVENTOR BY e14 A'rroRN V G. BROLLO 3,430,638 MACHINE WITHSELF-CENTERING ROTATING BASKET March 4, 1969 FOR WASHING DISHES ANDUTENSILS Filed April 11, 1967 Sheet Fig.

INVENTOR G. B r0220 B mukw ATTORNEYS arch 4, 1969 G, BROLLQ 3,430,638

MACHINE WITH SELF-CENTERING ROTATING BASKET FOR WASHING DISHES ANDUTENSILS Filed April 11. 1967 Sheet .4" of 4 INVENTOR ATTORNEYS UnitedStates Patent MACHINE WITH SELF-CENTERING ROTATING BASKET FOR WASHINGDISHES AND UTENSILS Giuseppe Brollo, Plaza della Repubblica 32, Milan,Italy Filed Apr. 11, 1967, Ser. No. 630,118 Claims priority, applicationItaly, Jan. 13, 1967,

11,434/ 67 US. Cl. 134112 4 Claims Int. Cl. A471 /32 ABSTRACT OF THEDISCLOSURE A machine for washing dishes and the like having a discsupporting the basket for the articles to be washed, the disc beingrotatably mounted on a coaxial support. The basket is guided and raisedby a pair of strips which are located under the basket and connected byhinge means with the closing door of the machine.

Machines for washing dishes and utensils of the known type, whether thebasket is fixed or movable, are of a somewhat complex construction and,among other things, they do not meet present demands basically becausethey need a large amount of detergent and washing takes a considerabletime.

Furthermore these machines of the known type have a small volumetriccapacity in relation to their overall dimensions, in consequence ofwhich the washing operations have to be repeated several times beforethe average number of articles has been washed. This has thedisadvantage of necessitating long periods of work, waste of material,heavy consumption of electricity and the use of a considerable amount ofwater with only a modest result in service.

The present invention relates to a machine for washing dishes andutensils and similar articles, of a simpler construction and with moreefliciency, in which the volumetric capacity in relation to the totaloverall dimensions of the machine is raised to a point where for anaverage load of articles to be washed only one working cycle has to becarried out.

By comparison with the known types, the machine according to theinvention has the advantage that the basket(s) for holding the articlescan be taken out completely and the relative operations of inserting andremoving the basket(s) do not entail laborious procedures because thesame closing door of the machine provides for the disengagement of thebasket(s) when the machine has to be opened and for their automaticcentring in the correct position when, on the other hand, the machinehas to be closed to start a fresh working cycle. This automatic actionis achieved by the present invention by the fact that the basket(s) forholding the articles are disposed on a rotating plate appropriatelysupported so as to rotate freely and that the means for disengaging thebasket(s) from this rotating plate are connected by an articulation withthe closing door of the machine in such a manner that the opening ofthis door shall bring about the raising and hence the disengagement ofthe basket(s) from the machine, while the closing of the said dooreffects a lowering and consequently an automatic placing on and in thecentre of said rotating plate, the above-mentioned means of placing anddisengagement of the basket(s) consisting of strips, on an inclineplane, Working bilaterally under the basket and by sliding on some fixedpart of the machine.

The rotation of the basket(s) together with the abovementioned rotatingplate takes place according to the invention by causing jets of waterissuing under pressure from one or more ejector nozzles to play on thearticles to be washed, from the front and at a certain angle, whilePatented Mar. 4, 1969 other jets of water, coming from another ejectornozzle, or other ejector nozzles, differently disposed and angled inrelation to the ones mentioned already, play on the same articles fromthe rear with a braking action, or vice versa so as to wash the articlesvigorously on both sides, the angling and disposition of all theseejectors being preselected in such a way as to effect a relatively slowaxial rotation of the said basket(s).

Some possible forms of construction of the machine according to theinvention are illustrated by way of example in the accompanying sheetsof drawings.

FIG. 1 represents a machine for washing dishes and utensils inaccordance with the invention, provided with two baskets operatingindependently, in which for the sake of clarity of illustration thelower basket has been removed and the corresponding door opened.

FIG. 2 shows the same machine as in FIG. 1 but here the upper door isopen and the basket for holding the articles and the relative rotatingdisc have been drawn in exploded position in solid lines, the workingposition of the latter having been drawn in broken lines.

FIG. 3 is a partial longitudinal section of the upper part of FIG. 1 orlower one of FIG. 2, reproduced with the various members in positiondetached from one another.

FIG. 4 is a longitudinal section of FIG. 2, completed by the baskets thelower of which is shown in the working position and the upper one in theremoval position.

FIG. 5 is a plan view of FIG. 4 viewed along the transverse plane 5 5FIG. 6 indicates a constructional variant of the machine underconsideration in which the baskets are coupled to one another so as tooperate jointly on a rotating plate for their common support.

FIG. 7 is the machine in FIG. 6 viewed from above on a different scale.

With reference to FIGURES l to 5 as an indication, the machine comprisesa case 1 with two closing doors, an upper door 2 and the other, lowerdoor 3.

Level with each door and in the centre of the machine are disposed thesupports 4 and 5, respectively, on which the rotating discs carrying thebaskets 6 and 7, respectively, engaging with the pin 8 and the circularedge 9 of each support by their lower recesses 8a and 9a, are adequatelylocated with free axial rotation. Constructionally, the support 4 isheld up by the cross member 10 and the support 5 by the baseplate 11 ofthe machine, while suitable ball bearingsnot shown-or some otherequivalent permit a reduction in the friction involved.

The baskets for holding the articles to be washed 12 and 13 are simplyinserted in the machine through the doors and automatically arranged onthe corresponding rotating discs 6 and 7 as described above, by means ofan edge 14 which projects sufficiently from the said discs and isadapted to receive, with an easy fit, a prominence 15 disposed at thebottom of each basket.

Fixed against the inner surfaces of the walls on both sides of themachine are two small squares 16 and 17 level with each door, on whichthere can run freely the strips 18 and 19 respectively, connected incantilever fashion on the corresponding door by means of the hinge whichhas the general reference 2% These strips have at the rear an inclinedplane 21 which effects the lifting of the relative basket when the dooris opened, permitting it to become disengaged from the rotating plateand to glide along said strips, to bring it outside the machine for easyremoval, as is shown in the top part of FIG. 4. Conversely, when thedoor is closed the strips descend, permitting the basket to place itselfautomatically, simply by dropping down, on the corresponding rotatingplate 6 and 7 after having been pushed, first by hand and then by thedoor itself, up to an end 3 stop which for the sake of brevity has notbeen shown in the drawing.

Disposed, substantially vertical in their position in the interior ofthe machine, are two water pipes 22 and 23 which come from a tank offeed water 24. This tank 24 and all the arrangements for filtering andconveying the water and everything else necessary for carrying out thestages of washing and rinsing in a continuous cycle have not beendescribed in detail here because they are well known in this field.

From the pipes 22 and 23 the water, heated by the electrical resistance25 and forced through at high pressure by the motor 26, is forced outthrough water ejecting nozzles 27-282930 disposed along the said pipesin a position tangential to the baskets 12 and 13 for holding thearticles to be washed, while a pair of ejectors 27 and 28 for eachbasket plays from the front on the dishes and utensils 31, here disposedradially, upright in said baskets while the water issuing from the otherpair of jectors 29 and 30 present for each basket plays on the dishesand the utensils from behind, but at a different inclination, moreangled, in order to obtain a braking action so as to permit a relativelyslow rotation of the baskets in the counterclockwise direction F (FIG.

The ejectors of each pair are slightly out of phase in relation to oneanother, the sole purpose of this being to direct the washing water asmuch into the more projecting zone as into the zone of the dishes whichis nearer the centre of rotation of the corresponding basket.

In a constructional variant the present machine, as is shown in FIG. 6,comprises two baskets 12a and 13a, superposed and adequately linkedtogether simply by fitting in, both being held up by a single support 5ato carry the disc, disposed on the baseplate of the said machine. Thisconstructional solution confers the advantage of a further limitation ofthe overall dimensions of the machine and also of the manufacturingcosts because, by comparison with the previously described machine, thisone requires the use of only one rotating disc and only one closing door2a, besides the installation of a single pair of strips 18a and 19a forguiding and disengaging the baskets. In this constructional solution thedishes and the utensils are placed one after the other and parallel toone another so that the jets of water coming from the ejector nozzles27-28-29 and 30, striking said dishes and said utensils at differentangles at first from the front and, after half a turn of the basket fromthe rear, cause the latter to rotate in one direction or the otheraccording to the inclination which is given to the said ejector nozzles.

Naturally the dishes and the utensils can be placed in the baskets inother, different positions besides the radial arrangement and theparallel arrangement described above, without thereby changing thewashing action which is obtained under the present invention with jetsof water for moving and jets of water for braking the rotation of thebaskets,

I claim:

l1. Machine for washing dishes, utensils and similar objectscharacterized by the fact that it comprises at least one supporting discfor at least one basket containing the articles to be washed, rotatablydisposed on a coaxial support and a pair of strips for guiding andraising said basket, disposed bilaterally under the latter, connected bymeans of a hinge with the closing door of the machine and operating, onan inclined plane, against a fixed part of the machine, so as to efiectthe raising of the said basket, disengaging it from the above-mentionedrotating disc when the door is opened after the washing operation and,conversely, effecting the lowering thereof, and hence its placing on therotating disc, when the door has to be closed for putting the machineinto action, also that it comprises a series of ejector nozzles emittingwater under pressure, disposed on tangential opposition to the baskets,of which ejectors at least one directs the water frontally on to thearticles to be washed, previously arranged upright in any way in thebaskets, and at least one other ejector, set at a different angle,directs the water from the rear on the said objects with a brakingaction, so as to obtain a relatively slow rotation of the basket.

2. Machine for washing dishes and utensils as claimed in claim 1,characterized by the fact that the rotating disc carrying the basket isengaged coaxially by its support with the interposition of ballbearings, or the like, said support being disposed under the rotatingdisc so as not to impede the removal and the placing of the basketholding the object for washing on the said disc.

3. Machine for washing dishes and utensils as claimed in claim 1,characterized by the fact that it comprises two or more basketsoperating independently, disposed on the same number of discs rotatingin the same direction or in opposite directions, and two or more doorslocated level with said baskets.

4. Machine for washing dishes and utensils as claimed in claim 1,characterized by the fact that it comprises two or more baskets linkedcoaxially one on the other so as to operate jointly and one rotatingdisc supporting said baskets, also a single frontal door located levelwith the said baskets.

References Cited UNITED STATES PATENTS 1,633,803 6/1927 Ballin 134-4383,060,944 10/1962 Brollo 134139XR FOREIGN PATENTS 112,204 1/ 1941Australia.

ROBERT L. BLEUTGE, Primary Examiner.

US. Cl- X.R. -1. 4l. 1 165

